One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,10)(4,8)(5,14)(6,9)(7,13)(11,16)(12,15)(17,18,22,27)(19,30,33,25)(20,32,36,48)(21,28,41,31)(23,44,24,29)(26,39,46,38)(34,40,45,37)(35,43,47,42)(1,3)(2,7)(4,11)(5,12)(6,13)(8,15)(9,10)(14,16)(17,19)(18,25)(20,35)(21,26)(22,33)(23,34)(24,45)(27,30)(28,38)(29,40)(31,39)(32,42)(36,47)(37,44)(41,46)(43,48) involution — undirected(1,4,6,5)(2,8,9,14)(3,11,13,12)(7,15,10,16)(17,20,22,36)(18,26)(19,31)(21,40,41,37)(23,38,24,39)(25,42,30,43)(27,46)(28,33)(29,32)(34,35)(44,48)(45,47)(1,5,6,4)(2,8,9,14)(3,12,13,11)(7,15,10,16)(18,27)(20,36)(25,30)(28,31)(29,44)(35,47)(37,40)(38,39)(3,13)(7,10)(11,12)(15,16)(17,21,24,43,22,41,23,42)(18,28,29,47,27,31,44,35)(19,32,34,46,33,48,45,26)(20,37,39,30,36,40,38,25)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.